CN106481508A - Wind power plant and the 2nd brake unit for wind power plant - Google Patents
Wind power plant and the 2nd brake unit for wind power plant Download PDFInfo
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- CN106481508A CN106481508A CN201610452027.3A CN201610452027A CN106481508A CN 106481508 A CN106481508 A CN 106481508A CN 201610452027 A CN201610452027 A CN 201610452027A CN 106481508 A CN106481508 A CN 106481508A
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- 239000000314 lubricant Substances 0.000 claims description 3
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- 238000013461 design Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000006698 induction Effects 0.000 description 2
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- 239000011230 binding agent Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0244—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0204—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0244—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking
- F03D7/0248—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for braking by mechanical means acting on the power train
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The problem of the present invention is to reduce the breakage of the component parts especially yawing unit of wind power plant further.The wind power plant of the present invention possesses：Pillar；Nacelle；Swiveling gear；1st brake unit (18), not via swiveling gear, the revolution to nacelle is braked；N platform the 2nd brake unit (YU), it has the revolution little gear (RP) engaging with swiveling gear and by being braked thus being braked to the revolution of nacelle via swiveling gear to the rotation turning round little gear, wherein, n is more than 2 integer.N platform the 2nd brake unit has the torque limiter (TL) starting to skid when the work being applied with more than setting starts torque, and, by external force suppose maximum be set to A, the brake force of the 1st brake unit is set to B, work started torque be set to X, will torque is set to Y after work when, meet following relation：(A B) (n 1) Y ＜ X.
Description
The application advocates the priority based on Japanese patent application the 2015-167285th filed in August in 2015 26 days.
The full content of this Japanese publication is by reference to being applied in this specification.
Technical field
The present invention relates to a kind of wind power plant.
Background technology
There is a kind of wind power plant, it possesses disclosed in patent documentation 1：Pillar；Nacelle, with respect to the revolution of this pillar；
Swiveling gear, is arranged on pillar；Four yawing unit, have the revolution little gear engaging with swiveling gear and by revolution
The rotation of little gear is braked thus driving nacelle revolution or the revolution to nacelle to be braked via described swiveling gear.
As shown in figure 11, sliding bearing 918 is used disclosed in patent documentation 1 as not via swiveling gear 920
Structure to the brake unit that the revolution of nacelle 916 is braked.Specifically, in this sliding bearing of subsidiary braking function
In 918, in the way of surrounding the shaft bearing plate 919 being fixed on pillar 914 side, it is provided with the 1st material for sliding bearing～the 3rd sliding axle
Corbel material 921A～921C, (by setting the resistance to sliding of this sliding bearing 918) obtains regulation for the revolution of nacelle 916
Brake force.
Wind power plant disclosed in patent documentation 1 is configured to, if having a power failure under high wind, weakens yawing unit 924
Brake force so that nacelle 916 can turn round.
Patent documentation 1：Japanese Unexamined Patent Publication 2011-127551 publication
Wind power plant disclosed in patent documentation 1 is configured to, if under high wind have a power failure, weaken brake force so that
Nacelle can turn round.However, the breakage of yawing unit actually still cannot be substantially prevented from, produce damaged sometimes.
Content of the invention
The present invention is to complete to solve the problems, such as above-mentioned conventional, and its problem is that reducing wind-power electricity generation further sets
The breakage of standby component parts, especially reduces the breakage of yawing unit further.
The present invention solves above-mentioned problem by following structure, i.e. a kind of wind power plant, and it possesses：Pillar；Short
Cabin, with respect to the revolution of this pillar；Swiveling gear, is arranged at described pillar；1st brake unit is right not via this swiveling gear
The revolution of described nacelle is braked；N (n is more than 2 integer) platform the 2nd brake unit, it has is nibbled with described swiveling gear
The revolution little gear closed and by being braked thus via described swiveling gear to described short to the rotation of this revolution little gear
The revolution in cabin is braked, wherein, described n platform the 2nd brake unit have in the torque being applied with more than setting start beat
Sliding torque limiter, is set to A in the supposition maximum being intended to the external force making described nacelle revolution, by described 1st brake unit
Brake force be set to B, the work of torque limiter that will be equivalent to described setting starts torque and is set to X, by this torque limit
When torque is set to Y after the work of transmission after device work, meet following relation：(A-B)-(n-1) Y ＜ X.
The actual Breakage Mechanism to yawing unit such as the present inventor has carried out studying and has verified, its result obtains with existing
Design philosophy be to tackle the opinion of (Summary for Design different from the past).Said structure is based on this opinion (detailed content
Aftermentioned).
Based on this opinion, the present invention opens when being assembled with the torque being applied with more than setting in n platform the 2nd brake unit
Begin the torque limiter skidding.And, the present invention is configured to, and is set to A in the supposition maximum by external force, by the 1st brake unit
Brake force be set to B, the number of units of the 2nd brake unit is set to n, by the work of the torque limiter of the 2nd brake unit start turn
When square is set to X, torque after work is set to Y, meet following relation：(A-B)-(n-1) Y ＜ X.
Thereby, it is possible to reduce further the wind power plant failing to tackle with conventional thought component parts broken
Damage, enable in particular to reduce the breakage of yawing unit further.
In addition, the wind power plant of the present invention possesses：Pillar；Nacelle, with respect to the revolution of this pillar；Swiveling gear, if
It is placed in described pillar；1st brake unit, not via this swiveling gear, the revolution to described nacelle is braked；N (n be 2 with
On integer) platform the 2nd brake unit, its have the revolution little gear engaging with described swiveling gear and by this revolution little tooth
The rotation of wheel is braked thus being braked to the revolution of described nacelle via described swiveling gear, wherein, described n platform the 2nd
Brake unit has the torque limiter starting to skid in the torque being applied with more than setting, and, be intended to make described
The supposition maximum of the external force of nacelle revolution is set to A, the brake force of described 1st brake unit is set to B, will be equivalent to described rule
The work of each torque limiter of definite value start torque be set to X1, X2 ..., Xn, by each torque limiter work after transmit
Work after torque be set to Y1, Y2 ..., Yn, each work is started torque X1, X2 ..., minimum work in Xn starts to turn
Square be set to Xmin, by torque Y1 after each work, Y2 ..., torque is set to Ymax after maximum work in Yn when, meet such as ShiShimonoseki
System：(A-B)-[(Y1+Y2+ ...+Yn)-Ymax] ＜ Xmin.
In accordance with the invention it is possible to reduce the breakage of the component parts of wind power plant further, enable in particular to further
Reduce the breakage of yawing unit.
Brief description
Fig. 1 is the configuration example of the yawing unit of the wind power plant involved by representing embodiments of the present invention
Sectional view.
Fig. 2 is the enlarged view of the main part of the yawing unit representing Fig. 1.
Fig. 3 is that the outline of the configuration relation between the swiveling gear in the embodiment represent Fig. 1 and revolution little gear is bowed
View.
Fig. 4 is the schematic diagram of the working condition of the torque limiter of yawing unit representing Fig. 1.
Fig. 5 is the schematic diagram of the working condition after the Fig. 4 of the torque limiter of yawing unit representing Fig. 1.
Fig. 6 is the schematic diagram of the working condition after the Fig. 5 of the torque limiter of yawing unit representing Fig. 1.
Fig. 7 is the schematic diagram of the working condition after the Fig. 6 of the torque limiter of yawing unit representing Fig. 1.
Fig. 8 is the schematic diagram of the working condition after the Fig. 7 of the torque limiter of yawing unit representing Fig. 1.
Fig. 9 is the torque of the yawing unit of the wind power plant involved by another example representing embodiments of the present invention
The schematic diagram of the working condition of limiter.
Figure 10 is the summary side elevation of the wind power plant entirety representing Fig. 1.
Figure 11 is the major part representing the structure near the conventional yawing unit of wind power plant and swiveling gear
General profile chart.
In figure：12- wind power plant, 14- pillar, 16- nacelle, 18- sliding bearing (the 1st brake unit), 20- turns round
Gear, RP- revolution little gear, TL- torque limiter, YU- yawing unit (the 2nd brake unit), the supposition maximum of A- external force,
The brake force of B- the 1st brake unit, X- work starts torque, torque after Y- work, n- number of units (more than 2 integers).
Specific embodiment
Hereinafter, with reference to the accompanying drawings the wind power plant involved by of embodiments of the present invention is carried out specifically
Bright.
First, the schematic configuration from this wind power plant 12 proceeds by explanation.
Figure 10 is the summary side elevation representing this wind power plant 12 entirety.And, Fig. 1 is the enforcement representing the present invention
The sectional view of the configuration example of yawing unit YU of the wind power plant 12 involved by of mode, Fig. 2 is this yawing unit
The enlarged view of the main part of YU, Fig. 3 is swiveling gear 20 (axle center C20) and the little tooth of revolution representing in this wind power plant 12
The approximate vertical view of the configuration relation between wheel RP (RP1～RP4).
As shown in Figure 10, the wind power plant 12 involved by present embodiment possesses pillar 14 and pacifies with freely rotating
It is loaded on the nacelle 16 on this pillar 14.Nacelle 16 is pivotally installed on pillar via the sliding bearing 18 with braking function
14.
This sliding bearing 18 is equivalent to " the 1st brake unit " in present embodiment.Here, so-called 1st brake unit is
Refer to " brake unit revolution of nacelle being braked not via swiveling gear ".
When as the 1st brake unit using " there is the sliding bearing 18 of braking function ", specifically, for example, can adopt
With the structure described in the above-mentioned patent documentation 1 that illustrated using Figure 11.By to shaft bearing plate 919 or the 1st sliding axle corbel
The raw material of material the～the 3 material for sliding bearing (921A～921C) selects etc., can adjust produced brake force.And
And, for example, it is also possible to setting by adjust spring decrement adjust material for sliding bearing to the pressing force of shaft bearing plate thus
Make the mechanism that brake force is variable.Brake force produced by sliding bearing 18 is no matter when nacelle 16 turns round or (static during braking
When) all work all the time.
In addition, the supporting device of nacelle 16 need not be necessarily made up of sliding bearing, for example, can also be made up of rolling bearing.
Even rolling bearing, inevitable also can have steering resistance, therefore can be used as " not via swiveling gear, nacelle being returned
Turn the 1st brake unit being braked " and function.
Swiveling gear 20 is provided with pillar 14, yawing unit as shown in Figures 1 and 2 is provided with nacelle 16
YU.Yawing unit YU is equivalent to " the 2nd brake unit " in present embodiment.Here, so-called 2nd brake unit refers to " have
The revolution little gear that engages with swiveling gear and by being braked thus via rotary teeth to the rotation of this revolution little gear
The device that wheel is braked to the revolution of nacelle ".
As shown in figure 3, in this wind power plant 12, being provided with four yawing unit YU (YU1 for swiveling gear 20
～YU4).I.e. n=4.N is more than 2 integer.Four yawing unit YU are respectively provided with identical structure.Yawing unit YU have with
Revolution little gear RP (can also be internal messing) of swiveling gear 20 external toothing.
As shown in figure 3, four yawing unit YU simultaneously unequal interval configurations in the circumferential.Certainly, the configuration of yawing unit YU
It is not limited to the configuration shown in this Fig. 3, for example, it is also possible to yawing unit YU is configured in the circumferential at equal intervals, or also may be used
With by all yawing unit YU1～YU4 centralized configuration nacelle 16 rear side (side contrary with blade 17).
Hereinafter, with reference to Fig. 1 and Fig. 2, the concrete structure of yawing unit YU is illustrated.
Each yawing unit YU has motor 2, reducing gear 4 and arrestment mechanism 6, reducing gear 4 output shaft (concrete and
Speech, rear class output shaft 51 described later) on be provided with revolution little gear RP.Yawing unit YU nacelle 16 can be driven to turn round but also
Nacelle 16 can be braked.Yawing unit YU also has the torque starting to skid in the torque being applied with more than setting
Limiter TL.
In the present embodiment, the motor 2 of yawing unit YU is three-phase induction motor.Induction motor substantially has " sliding
Dynamic ", therefore, by simultaneously driving four motors 2 of yawing unit YU, can automatically carry out the impartial distribution of torque, four can be made
Platform motor 2 bears almost identical load and drives revolution little gear RP.In addition, motor can also be the servo of subsidiary brake
Motor.
In this wind power plant 12, the arrestment mechanism 6 of yawing unit YU be arranged at the motor drive shaft 12A of motor 2 with
Load contrary side.Arrestment mechanism 6 possesses：Coil 24, it is fixed on motor case 22；Movable platen 26, it was assembled in week
It is fixed on motor case 22 upwards and can be axially moveable；Spring 28, it makes this movable platen 26 to the side contrary with coil
Force；Brake hub 32, it is integrated with motor drive shaft 12A via key 66；Plate body 34, it is fixed on motor case 22 side.
In the state of non-drive motor 2 (when coil 24 is not powered on), movable platen 26 is pressed on brake hub by spring 28
32 sides, forcefully clamp brake hub 32 together with plate body 34, thus constraining the rotation of (braking) motor drive shaft 12A.In motor 2
In the state of driving, movable platen 26 is attracted by coil 24, as a result, braking is disengaged, thus allowing motor drive shaft 12A to rotate.
The opening and closing of the braking of arrestment mechanism 6 are linkages with the driving of motor drive shaft 12A.That is, this arrestment mechanism 6 is
Except energetically running motor 2 so that the period in addition to nacelle 16 revolution limits the non-excited work type of motor drive shaft 12A rotation
Brake unit.Motor drive shaft 12A is connected in the way of can transmitting power with revolution little gear RP, therefore, by motor drive shaft 12A
It is braked so as to be braked to revolution little gear RP.
The reducing gear 4 of yawing unit YU possesses：The prime reducing gear 44 of two-stage type, it is by hypoid gear group 40
And parallel-axes gears group 42 is constituted；The rear class reducing gear 46 (omitting the diagram of its concrete structure) of eccentric oscillating-type, it is one
Level formula and there is high speed reducing ratio.
The torque limiter TL of yawing unit YU is arranged on the integrated with prime output shaft 50 of prime reducing gear 44
Between the rear class input shaft 56 of connecting shaft 52 and rear class reducing gear 46.
Torque limiter TL has：Supporting member 58 (the 1st part), it is rotated integrally with connecting shaft 52 (the 1st axle)；Friction
Plate member 60 (the 2nd part), it is rotated integrally with the rear class input shaft 56 (the 2nd axle) of rear class reducing gear 46；Pressing mechanism 62,
Its pressing supporting member 58 and friction plate member 60；Guiding mechanism 64, it adjusts the pressing force of this pressing mechanism 62.
More specifically, the supporting member 58 rotating integrally with connecting shaft 52 has the outer cylindrical portion being embedded in connecting shaft 52
The end of 58A and rear class input shaft 56 side from this cylindrical portion 58A is radially oriented outside and extends and be formed as with this cylindrical portion 58A
Extension plate portion 58B of one.
Cylindrical portion 58A of supporting member 58 is integrated in the circumferential with connecting shaft 52 via key 66.By packing ring 68 and spiral shell
Bolt 70, suppression cylindrical portion 58A is with respect to connecting shaft 52 in the axial direction to rear class input shaft 56 side shifting.Cylindrical portion 58A in axle
The end 58A1 of the side contrary with the rear class input shaft and end 50E of rear class input shaft 56 side of prime output shaft 50 supports upwards
Connect, thus, suppression cylindrical portion 58A is with respect to connecting shaft 52 in the axial direction to a side shifting contrary with rear class input shaft.
On the other hand, the rear class input shaft 56 of rear class reducing gear 46 is integrated with base plate 74 via spline 72.Base plate 74
There is discoideus plate portion 74A and the peripheral part from this plate portion 74A rising portions 74B towards connecting shaft 52 lateral bend.
Described friction plate member 60 is integrated with base plate 74 via bolt 76 in this rising portions 74B.Thus, friction plate member
60 rotate integrally via the rear class input shaft 56 of base plate 74 and rear class reducing gear 46.Friction plate member 60 is presented axially in and props up
The side contrary with rear class input shaft of extension plate portion 58B of bearing portion part 58, and with and the support that rotates integrally of connecting shaft 52
Part 58 is opposed.
The pressing mechanism 62 of pressing supporting member 58 and friction plate member 60 possesses：Movable platen 80, it can be along connecting shaft
52 axial movement is to press friction plate member 60；Disk spring 82, its side contrary with friction plate member from axial direction
Press this movable platen 80；Stressed member 84, it accepts the counteracting force of the pressing force of this disk spring 82.Friction plate member 60 presss from both sides
Be held between extension plate portion 58B of supporting member 58 and movable platen 80, and with this supporting member 58 and movable platen 80 CONTACT WITH FRICTION.
The guiding mechanism 64 of the pressing force of adjustment pressing mechanism 62 possesses：Adjustment bolt 86, it can adjust stressed member
84 axial location；Fixed plate 88, it has the female thread 88A screwing togather for this adjustment bolt 86.By adjusting adjustment bolt 86
Screw togather position with respect to female thread 88A, the axial location of stressed member 84 can be adjusted such that it is able to adjustment pressing mechanism 62
Disk spring 82 pressing force.Start thereby, it is possible to adjust the work making torque limiter TL start working (starting to skid)
Torque X.And, start the adjustment synchronization of torque X with work, transmit after can indirectly adjusting torque limiter TL work
Torque Y after work.
Revolution little gear RP of yawing unit YU is arranged at rear class reducing gear 46 via spline 53, bolt 55 and plate body 57
Rear class output shaft 51, and turn round little gear RP and engage (with reference to Fig. 1, Fig. 3) with the swiveling gear 20 of 14 sides that are fixed on pillar.
Then, the shell of yawing unit YU is illustrated.
The motor case 22 of motor 2 links via the prime shell 92 of connected with outer casing 90 and prime reducing gear 44.Even
Connect and between shell 90 and prime shell 92, be configured with o-ring 93.
The prime shell 92 of prime reducing gear 44 had by side the bottomed cylindrical of peristome 94A main part 94 and
The lid portion 96 closing this peristome 94A is constituted.The main part 94 of prime shell 92 and lid portion 96 are linked by bolt 98
Together.Sealed by o-ring 100 between main part 94 and lid portion 96.Form prime by main part 94 and lid portion 96 to slow down
Prime receiving space SP1 of mechanism 44.The described prime output shaft 50 of prime reducing gear 44 runs through main part 94 and lid portion
96.It is configured with oil sealing 102 between prime output shaft 50 and main part 94, configure between prime output shaft 50 and lid portion 96
There is oil sealing 103.Prime receiving space SP1 passes through main part 94 and lid portion 96, prime output shaft 50, o-ring 93, o-ring
100th, oil sealing 102, oil sealing 103 and sealed.
The main part 94 of prime reducing gear 44 and lid portion 96 are linked to the 1st connecting plate by run through bolt 104
106.1st connecting plate 106 is linked to the limiter shell 110 of torque limiter TL via connecting bolt 108.
Form limiter receiving space SP3 of torque limiter TL by limiter shell 110.Limiter shell 110 passes through
Binder bolt 112 is linked to the 2nd connecting plate 114.2nd connecting plate 114 is linked to rear class reducing gear 46 via rear grade bolt 116
Rear class shell 118.Rear class receiving space SP2 being internally formed rear class reducing gear 46 in rear class shell 118.
The rear class input shaft 56 of rear class reducing gear 46 runs through rear class shell 118.After bushing 120 and oil sealing 122 are arranged at
Between level shell 118 and rear class input shaft 56.Rear class receiving space SP2 of rear class reducing gear 46 pass through rear class shell 118, after
Level input shaft 56, bushing 120 and oil sealing 122 etc. and sealed.
Prime receiving space SP1 of prime reducing gear 44 is passed through with limiter receiving space SP3 of torque limiter TL
It is configured at the oil sealing 102 between the main part 94 of prime reducing gear 44 and prime output shaft 50 and be spaced.Torque limiter
Limiter receiving space SP3 of TL and rear class receiving space SP2 of rear class reducing gear 46 are defeated by rear class shell 118, rear class
Enter axle 56, bushing 120 and oil sealing 122 and be spaced.
It is sealed with lubricant in prime receiving space SP1 and rear class receiving space SP2, but in limiter receiving space
It is not sealed with lubricant in SP3.That is, this torque limiter TL is dry-type torque limiter.
Wind power plant 12 involved by present embodiment is based on reality, the Breakage Mechanism of yawing unit YU to be carried out
The new opinion that obtained after research and checking and design.
This opinion approximately as.
[opinion 1] drives revolution little gear RP so that nacelle 16 in each yawing unit YU by the driving force of motor 2
During revolution, the direction that revolution little gear RP of each yawing unit YU transmits torque to swiveling gear 20 is consistent.Each yawing unit YU
This torque deviation less, each yawing unit YU promotes the revolution of nacelle 16 jointly.
[opinion 2] if however, yawing unit YU enters on-position because of the stopping of motor 2, the external force that wind-force causes
(wind-force) can be from nacelle 16 laterally each yawing unit YU input.Now, compared with when making nacelle 16 revolution by motor 2, each inclined
The deviation of boat unit YU load to be born is larger.
[opinion 3] is operated (skidding) in the torque limiter TL of all yawing unit YU causes nacelle 16 to start continuously
During revolution, the deviation of the load that each yawing unit YU is born is especially larger.Moreover, just beat in all torque limiter TL
After cunning (after nacelle 16 just starts continuous rotary), the direction of the load that each yawing unit YU is born also can become not
One, and be applied with sometimes on specific yawing unit YU than static when bigger load.
[opinion 4] if all yawing unit YU equably bearing loads, being input to from swiveling gear 20 side of nacelle 16
The total load head of the external force (wind-force) of each yawing unit YU is can to bear (even if it is equal hardly to arrive greatly all yawing unit YU
Etc. ground bearing load also unaffordable degree).
Wherein, above-mentioned [opinion 3] is diverse concept with the concept of conventional opinion.
As described in Patent Document 1, think, for example, if allowing to be in halted state when having a power failure under high wind in the past
Nacelle 16 turns round, then the load of yawing unit YU will decline.
However, the actual Breakage Mechanism to yawing unit YU such as the present inventor is studied and is found after verifying that this is conventional
Opinion is unreasonable, and confirm occur when nacelle 16 starts continuous rotary load become on the contrary big yawing unit YU this
The phenomenon of [opinion 3].
Produce should [opinion 3] although phenomenon the reasons why less clear and definite, speculate that its reason is as follows：Come by braking
In the state of contained nacelle 16 revolution, nacelle 16 is in substantially integrated state with pillar 14, but, if being located by braking
Nacelle 16 in halted state is intended to " starting to turn round " by wind, then being rocked by the supporting device of nacelle 16 is affected, revolution
Gear 20 produces the dislocation of impact with the position relationship turning round little gear RP.
Because the quality of nacelle 16 is huge, it is taken as that the supporting device of this nacelle 16 rocking to swiveling gear 20 with return
The impact caused by engagement turning little gear RP is larger.Result, it is believed that when nacelle 16 starts revolution, each yawing unit YU is held
The load being subject to occurs deviation, or can produce great load on specific yawing unit YU.
According to this opinion, the present inventor etc. obtains following opinion.
As the countermeasure for [opinion 3], in the state of braking, need to make the arrestment mechanism 6 of all yawing unit YU
External force can equably be born.In this regard, making swiveling gear 20 and the engagement equalization of revolution little gear RP (eliminate backlash
Difference) effective ways be so that the torque limiter TL of yawing unit YU is skidded.
But, even if in this case, at least one torque limiter TL also should be made non-slip and maintain off working state.
I.e. it is impossible to the state (nacelle 16 starts the state of continuous rotary) that all torque limiter TL start simultaneously at skidding occurs.For this reason,
Each torque limiter TL is also required to keep higher transmission torque (torque Y after work) after work.
In view of [opinion 4], as long as the work suitably setting each torque limiter TL starts torque Y after torque X and work, just
The torque limiter TL that at least one yawing unit YU can be made need not work, and " each yawing unit YU can be maintained impartial
Ground bearing load and nacelle 16 will not continuous rotary state ".Thereby, it is possible to prevent most of breakage of yawing unit YU.
In this regard, in the present embodiment, it is intended to make the supposition maximum A of external force of nacelle 16 revolution, not via rotary teeth
Wheel 20 and the revolution of nacelle 16 is braked brake force B of the 1st brake unit, the 2nd brake unit (that is, yawing unit YU)
Number of units n, make the work that torque limiter TL starts working start torque X, this torque limiter TL work after transmission work
After work, torque Y regards the parameter of needs management as, and makes it meet following relation：
(A-B)-(n-1) Y ＜ X ... (1).
In this formula (1), precursor is mutually all with the structure (characteristic) of all yawing unit YU.Preferably involved
In wind power plant 12, the number of units of yawing unit YU is 4 (n=4), and therefore, above-mentioned formula (1) is embodied in (A-B) -3Y ＜
X.
In addition, A, B, X, the Y in formula (1) is the reduced value on the position of revolution little gear RP.That is, being respectively worth is based on power
Deceleration between the position of the allocation position of the torque limiter TL in transmission system or arrestment mechanism 6 etc. and revolution little gear RP
Than and be converted to revolution little gear RP position on size value.
The supposition maximum A that (A-B) in formula (1) is equivalent to the external force (wind-force) turned round from nacelle 16 to be made deducts all the time
The amount of brake force B of the 1st brake unit applying, i.e. be equivalent to the brake force that the 2nd brake unit must endure as.
(n-1) Y in formula (1) is other in addition to last the 2nd brake unit in n platform the 2nd brake unit
The total of torque Y after the work that 2nd brake unit obtains in the case of all skidding.
Above-mentioned formula (1) is based on following objective：If the brake force (A-B) that must endure as from the 2nd brake unit deducts skidding
(n-1) value after total (n-1) Y of torque Y after the work of platform the 2nd brake unit is less than last the 2nd system do not skidded
The work of dynamic device starts torque X, then this last the 2nd brake unit can keep non-slip state.Thus, need not make
Nacelle 16 (continuous) revolution and being capable of remains stationary state.
According to [opinion 4], can it will be assumed that maximum A is assumed to the actual value less than n X.And, applying all the time
Brake force B of 1 brake unit is the value that can almost arbitrarily increase.Therefore, (A-B) is the value that can almost arbitrarily reduce.Therefore, root
According to suitable design, formula (1) must be capable of.
Here, with regard to above-mentioned formula (1), slightly supplementing.
Though the supposition maximum A of described external force is limited value, because being the value related to the wind-force under natural environment,
Therefore originally cannot be specifically defined as specifically being worth.Therefore, in the present embodiment, as the supposition maximum A of this external force
Using being defined as " the rated output torque of the motor 2 of all yawing unit YU of assembling × to revolution little gear RP position
The speed reducing ratio of reducing gear 4 aggregate value " value.
In the present embodiment, because four yawing unit YU are respectively provided with identical structure, therefore this supposition maximum A becomes
For：Speed reducing ratio × 4 of the rated output torque × reducing gear 4 of the motor 2 of yawing unit YU of assembling.If be mixed having
The yawing unit of the reducing gear of the different motors of rated output torque or different speed reducing ratio, then adopt each yawing unit
Aggregate value.
In the rated output torque of the motor 2 of selected yawing unit YU, even if so that rated output torque is had scraping by force
Also can make in the case of wind nacelle 16 within a few minutes～more than ten minutes wind resistance and return the ability that turns around.In this case, will
The supposition maximum A of the external force of nacelle 16 to be made revolution sets up with the rated output torque of motor 2 to associate to determine and compare conjunction
Reason.According to this definition, can clearly determine the supposition maximum A of external force.
On the other hand, make the work that torque limiter TL starts working start torque X just to start for this torque limiter TL
Maximum torque transfer capacity before skidding.Torque limiter TL starts torque X in the transmission torque inputting from upstream side more than work
When work (start skid), thus bigger torque is not passed to downstream.Specifically, become following state：By rubbing
Wipe contact and be clamped in the friction plate member between extension plate portion 58B of the supporting member 58 of torque limiter TL and movable platen 80
60 start to skid, thus bigger torque is not passed to downstream.
In contrast, after the work transmitted after work of torque limiter TL torque Y be this torque limiter TL
(when skidding) transferable torque during work.When torque limiter is not carry out specially designed torque limiter,
After this work, torque Y would generally be more much smaller than work starts torque X.But, in the present invention, in order that torque Y after work
Play an active part in braking, torque Y and work after therefore preferably employing work starts the close torque limiter of torque X.
More specifically, after work, torque Y is preferably more than the 80% of work beginning torque X, more preferably works and starts
More than the 90% of torque X.In described dry-type torque limiter TL involved by present embodiment as above, as work
Torque Y is able to ensure that work starts more than the 85% of torque X afterwards.
In addition, when number of units n of the yawing unit YU being carried is more, deviation can become more to equalize, and therefore there is work
After work, torque Y is slightly lower can also be allowed for being inclined to.Specifically, if torque Y opens for work after the work of torque limiter TL
[100-5 (n-1)] more than % of beginning torque X, then can more effectively realize the present invention.
Then, the effect to this wind power plant 12 illustrates.
If making the motor 2 of each yawing unit YU operate, revolution little gear RP is via prime reducing gear 44, torque limit
Device TL, rear class reducing gear 46 and rotate.As a result, revolution little gear RP is from the counteracting force of swiveling gear 20 acceptance engagement
Around the revolution of the axle center (axle center of pillar 14) of swiveling gear 20.Thus, whole yawing unit YU is public around the axle center of swiveling gear 20
Turn such that it is able to make nacelle 16 turn round with respect to pillar 14.
When nacelle to be made 16 is static, the arrestment mechanism 6 of each yawing unit YU is made to work thus rotation to revolution little gear RP
Turn and be braked.Short thereby, it is possible to be braked by the summation of the brake force of sliding bearing 18 and the brake force of yawing unit YU
With respect to the revolution of pillar 14, wherein, described sliding bearing 18 not via swiveling gear 20, enter by the revolution to nacelle 16 in cabin 16
Row braking, described yawing unit YU passes through to be braked thus via swiveling gear 20 to short to the rotation turning round little gear RP
The revolution in cabin 16 is braked.
In this wind power plant 12, it is braked as the revolution to nacelle 16 direct not via swiveling gear 20
The 1st brake unit, employ the structure supporting nacelle 16 by sliding bearing 18, therefore, it is possible to will be used as the 2nd brake unit
The capacity of the arrestment mechanism 6 of yawing unit YU reduce the amount of the brake force being equivalent to this sliding bearing 18 (as long as by brake
The stopping power of structure 6 is maintained identical it becomes possible to more easily be braked to nacelle 16).
Below, with reference to Fig. 4 to Fig. 8, four yawing unit YU of this wind power plant 12 are made to the braking of nacelle 16
With being described in detail.Fig. 4 to Fig. 8 is that the yawing unit YU showing schematically this wind power plant 12 makes to nacelle 16
The figure of of dynamic mode.
In Fig. 4 to Fig. 8, white triangles labelling represents the torque limit making each yawing unit YUn (YU1～YU4) respectively
The work that device TLn (TL1～TL4) starts working starts torque Xn (X1～X4).Black triangles labelling represents this moment by this driftage
Transmission torque T (T1～T4) of unit actual transfer.In addition, " T " letter lower case a～e below be in order to distinguish with
Time through and change value and mark.
Generally, carry out revolution by motor 2 and just after turn state is static in nacelle 16, all yawing unit YU
It is in roughly the same contact condition (backlash is 0 state) ([opinion 1]) with respect to swiveling gear 20.But, if from this shape
Through certain time, then, by wind, nacelle 16 can be because of swiveling gear 20 and the backlash turning round little gear RP or nacelle for nacelle 16 for state
The rocking etc. and somewhat move with respect to pillar 14 or tilt of 16 supporting system.Therefore, each yawing unit YU is with respect to revolution
The backlash of gear 20 becomes mutually different state.
Fig. 4 is expressed as follows situation：Produce fitful wind etc. in the above-described state and nacelle 16 is blown by this fitful wind, lead to make short
The external force of cabin 16 revolution is input to yawing unit YU via swiveling gear 20 from the revolution laterally opposite direction of little gear RP.
In the state of Fig. 4, the state being 0 with backlash just at the moment is strongly contacted with the driftage list of swiveling gear 20
The transmission torque that work more than torque limiter TL2 starts torque X2 is applied with first YU2.Thus, torque limiter TL2 leaves
Beginning work (starts to skid), and therefore transmission torque Ta2 will not rise above work and start torque X2.
And, now yawing unit YU1 is only subject to the work less than torque limiter TL1 to start the transmission torque of torque X1
Ta1 (Ta1 ＜ X1), yawing unit YU4 are subject to less transmission torque Ta4 (Ta4 ＜ X4).Yawing unit Y3 is just and rotary teeth
Wheel 20 is had larger backlash and is not contacted with swiveling gear 20 completely, therefore will not be transmitted completely from swiveling gear 20 side
Torque (Ta3=0 ＜ X3).
I.e., under the state of fig. 4, the only torque limiter TL2 of yawing unit YU2 work (starting to skid), and other
Torque limiter TL1, TL3, TL4 do not work (skidding).Therefore, the revolution little gear of yawing unit YU1, YU3, YU4
RP1, RP3, RP4 maintain resting state, and nacelle 16 will not be turned round (maintenance resting state).
With the torque limiter TL2 work of yawing unit YU2, wind power plant 12 is transitioned into the state of Fig. 5.
In the state of Fig. 5, the transmission torque Tb2 of torque limiter TL2 is after work beginning torque X2 is reduced to work
Torque Y2 (Ta2=X2 → Tb2=Y2).In the stage of Fig. 5, because yawing unit YU4 does not also work, therefore nacelle 16 does not also have
Have and start to turn round.Therefore, be still formed between revolution little gear RP3 of yawing unit YU3 and swiveling gear 20 backlash (
Gap), and the transmission torque Tb3 of the torque limiter TL3 of yawing unit YU3 is still 0.
On the other hand, the transmission torque Tb2 of torque limiter TL2 reduces the result of the torque Y2 to work, yawing unit
Transmission torque Tb1, Tb4 of torque limiter TL1, TL4 of YU1, YU4 rises.As a result, for example, as Tb1 >=X1, torque
Limiter TL1 works, and is transitioned into Fig. 6.
In figure 6, the transmission torque Tc1 of yawing unit YU1 is reduced to the result of torque Y1 after work, yawing unit YU4
Transmission torque Tc4 increase.As a result, as Tc4 >=X4, torque limiter TL4 works, and is transitioned into Fig. 7.
Fig. 7 represent torque limiter TL2, TL1, TL4 work after state, and represent torque limiter TL2, TL1,
TL4 transmits the state of transmission torque Td2, Td1, the Td4 being equivalent to torque Y2, Y1, Y4 after work respectively.I.e., except one partially
Outside the torque limiter TL3 of boat unit YU3, torque limiter TL2, TL1, TL4 of other yawing unit YU2, YU1, YU4 are equal
Skid, therefore, now, swiveling gear 20 revolution is equivalent between revolution little gear RP3 of yawing unit YU3 and swiveling gear 20
Backlash small amount (nacelle 16 also somewhat turns round corresponding measuring).As a result, being not yet applied with the driftage list of load so far
The transmission torque Td3 being equivalent to the amount having more is applied with first YU3.
But, because this wind power plant 12 is designed to meet described formula (1), that is, meet [(A-B) -3Y ＜ X], because
This, the work now putting on the transmission torque Td3 not more than yawing unit YU3 of yawing unit YU3 starts torque X3.This is
Because, [(A-B) -3Y]=Td3, and Td3 ＜ X3.Therefore, the torque limiter TL3 of yawing unit YU3 will not work and (start to beat
Sliding), therefore nacelle 16 is not more than between revolution little gear RP3 being equivalent to this yawing unit YU3 and swiveling gear 20
Small backlash and turn round (will not start turn round).Therefore, it is possible to prevent nacelle 16 from starting to go off course specific during revolution in advance
The phenomenon of very big load is applied with unit YU.
In addition, enabling torque limiter TL3 good by the work (skidding) of each torque limiter TL1, TL2, TL4
Bear transmission torque Td3, therefore soon can be with power cut-off (that is, becoming off working state).Therefore, as shown in figure 8,
Eventually all torque limiter TL become the state substantially uniformly bearing transmission torque Te1～Te4, and be again converted to can
Bear the state that work starts the transmission torque Te1～Te4 till torque X1～X4.
Thus, four yawing unit YU all can function effectively, can effectively be braked.
In addition, in the present embodiment, the braking function of sliding bearing itself as the 1st brake application.However,
For the structure of the 1st brake unit involved in the present invention, as long as just can be to the revolution of nacelle not via swiveling gear
The structure being braked, is not limited to this structure.
For example, as described above, (can be braked come the resistance energetically adjusting sliding bearing by fastening members such as bolts
Power) mechanism, the 1st brake unit as the present invention is more efficient.
And, natural, can also possess special brake unit as the 1st brake unit, thus replacing sliding
Bearing is used as the 1st brake unit.For example, it is also possible to adopt following structure, i.e. formed in a part for the base of nacelle and prop up
The axle center of post is coaxial and cylindrical portion (or plectane portion) around the rotation of the axle center of pillar, and pushed with the active force of spring or hydraulic pressure etc.
It is arranged on the braking chip part of pillar side so that it is contacted with this cylindrical portion, thus carrying out to the revolution of nacelle using frictional force
The structure of braking.Further, since rotation and braking have relativeness, therefore cylindrical portion can also be set using in pillar side
(or plectane portion), and the structure of braking chip part is set in nacelle side.
By arranging this 1st special brake unit, the value of (A-B) in formula (1) can be reduced further, so as to
Enough burdens reducing by the 2nd brake unit side further.
And, in the above-described embodiment, all yawing unit are constituted by identical yawing unit.But, at this
In invention, all yawing unit need not be identical.Number of units is also not only defined in four (n=4).
Its configuration example shown in Fig. 9.
Wind power plant 212 (omission overview diagram) in Fig. 9 possesses：One the 1st yawing unit YU101, it has
1st torque limiter TL101；Four the 2nd yawing unit YU102～YU105, its be respectively provided with the 2nd torque limiter TL102～
TL105.2nd yawing unit YU102～YU105 is identical yawing unit.
1st work of the 1st torque limiter TL101 starts torque X101 and is more than the 2nd torque limiter TL102～TL105
The 2nd work start torque X102～X105.The 2nd work beginning torque X102 of the 2nd torque limiter TL102～TL105～
X105 with the 2nd work after torque Y102～Y105 difference D102～D105 be less than the 1st torque limiter TL101 the 1st work open
Difference D101 of torque Y101 after beginning torque X101 and the 1st work.
All 2nd yawing unit YU102～YU105 in addition to a 1st yawing unit YU101 shown in Fig. 9
The state (state similar to Fig. 7 of previous embodiment) that 2nd torque limiter TL102～TL105 all works.
The primary structure of the wind power plant 212 in Fig. 9 is as follows.
First, by increasing the number of units (n=4 → n=5) of yawing unit YU, being capable of deviation becomes more equalization
Braking.
Then, the 2nd work of the 2nd torque limiter TL102～TL105 of four the 2nd yawing unit YU102～YU105
The 1st work starting the 1st torque limiter TL101 that torque X102～X105 is less than a 1st yawing unit YU101 starts to turn
Square X101 (X102～X105 ＜ X101).Therefore, being formed makes the 2nd torque limiter TL102～TL105 than the 1st torque limiter
The situation that TL101 works earlier.
If skidding, the revolution little gear of the yawing unit of this skidding and swiveling gear are produced on a certain torque limiter
Between backlash be plugged, therefore, afterwards, the yawing unit of this skidding just can reliably carry out the braking of script.
The 2nd work being additionally, since the 2nd torque limiter TL102～TL105 starts torque X102～X105 and the 2nd work
After work the difference D102～D105 of torque Y102～Y105 be set to less, therefore, even if it is also possible to maintain close to the after skidding
Torque Y102～Y105 after 2nd work of 2 work beginning torque X102～X105.
Certainly, because the size etc. of backlash state originally or applied external force is it is impossible to conclude that the 1st yawing unit YU101 begins
Will not skid eventually.But, it is more than the 2nd torque limiter because the 1st work of the 1st torque limiter TL101 starts torque X101
2nd work of TL102～TL105 starts torque X102～X105, the therefore the 1st yawing unit YU101 probability non-slip all the time
Higher.
Therefore, on probability, the brake force equalization that more easily control can be born each yawing unit is such that it is able to more
Securely maintain and do not make nacelle 16 start the state turned round.
In addition, including this structure, if the characteristic of (torque limiter) of each yawing unit is different from,
It is configured to meet with following formula (2).
I.e., it is possible to be configured to, the external force being intended to make nacelle to turn round suppose maximum be set to A, by the 1st brake unit
Brake force be set to B, the work making each torque limiter start working is started torque be set to X1, X2 ..., Xn, by each torque
Limiter work after transmission work after torque be set to Y1, Y2 ..., Yn and, by each work start torque X1,
X2 ..., minimum work in Xn start torque be set to Xmin, by torque Y1 after each work, Y2 ..., maximum work in Yn
When torque is set to Ymax after work, meet following relation：
(A-B)-[(Y1+Y2+ ...+Yn)-Ymax] ＜ Xmin ... (2).
This formula (2) is based on following objective.That is, in torque limiter, torque after work is not more than work beginning torque,
The lowest term therefore stoping nacelle revolution is that the torque limiter of all yawing unit in addition to a yawing unit is all
Become slipping state.
And, the work that there is torque limiter in multiple 2nd brake units (being yawing unit in above-mentioned example) starts
After torque X minimum and work, torque Y is the 2nd maximum brake unit, and finally the 2nd brake unit is not skidded, this
Situation is situation the severeest for wind power plant.
But, even if in this case, only pass through skid torque limiter minimum also can obtain [(Y1+Y2+ ...+
Yn)-Ymax] transmission torque.Therefore, even to the 2nd brake unit finally also do not skidded in multiple 2nd brake units
Possess the 2nd brake unit that the work that can only keep minimum starts the torque limiter of torque Xmin, as long as this work starts
Torque Xmin would not produce skidding more than (A-B)-[(Y1+Y2+ ...+Yn)-Ymax].Thus, with above-mentioned embodiment phase
Same, nacelle will not be made to turn round, and the breakage of the component parts of wind power plant can be reduced further.
In addition, this formula (2) is equivalent to the formula of formula (1).In other words, in formula (2), when all 2nd brake units are
Become formula (1) when identical.And, in the wind power plant 212 of Fig. 9, Ymax is Y102 (=Y103～Y105), Xmin
It is X102 (=X103～X105), therefore formula (2) becomes [(A-B)-(Y101+Y102+Y103+Y104+Y105)-Y102] ＜
X102.Thus, even if the 1st yawing unit YU101 is not left to finally, nacelle is not more than revolution little gear and swiveling gear
Between backlash and turn round.
In addition, in the above-described embodiment, employ following yawing unit as the 2nd brake unit, i.e. this yawing unit
There is motor, reducing gear and arrestment mechanism, the output shaft of reducing gear is provided with revolution little gear, this yawing unit can
Drive nacelle revolution and nacelle can be braked.But, the 2nd brake unit need not be yawing unit, for example,
Can be using the braking special cell eliminating motor from yawing unit.Or, a part for the 2nd brake unit is using braking
Special cell.
Claims (8)
1. a kind of wind power plant, it possesses：Pillar；Nacelle, with respect to the revolution of this pillar；Swiveling gear, is arranged at described
Pillar；1st brake unit, not via this swiveling gear, the revolution to described nacelle is braked；N platform the 2nd brake unit, its
Have the revolution little gear engaging with described swiveling gear and by the rotation of this revolution little gear is braked thus via
Described swiveling gear is braked to the revolution of described nacelle, and wherein, n is more than 2 integer, the spy of described wind power plant
Levy and be,
Described n platform the 2nd brake unit has the torque limiter starting to skid in the torque being applied with more than setting,
The supposition maximum of the external force being intended to make described nacelle revolution be set to A,
By the brake force of described 1st brake unit be set to B,
Will be equivalent to the torque limiter of described setting work start torque be set to X,
When after the work of transmission after this torque limiter is worked, torque is set to Y,
Meet following relation：
(A-B)-(n-1) Y ＜ X.
2. wind power plant according to claim 1 it is characterised in that
Described 2nd brake unit is the yawing unit that can drive described nacelle revolution and described nacelle can be braked,
Described yawing unit has motor, reducing gear and arrestment mechanism, and is provided with back on the output shaft of described reducing gear
Turn little gear.
3. wind power plant according to claim 2 it is characterised in that
The receiving space of described reducing gear is spaced with the receiving space of described torque limiter, in described torque limiter
It is not sealed with lubricant in receiving space.
4. wind power plant according to any one of claim 1 to 3 it is characterised in that
After the described work of described torque limiter, torque Y is [100-5 (n-1)] more than % that described work starts torque X.
5. wind power plant according to any one of claim 1 to 4 it is characterised in that
Described 2nd brake unit has：1st axle；2nd axle, is linked with the 1st axle via described torque limiter,
Described torque limiter has：1st part, is rotated integrally with described 1st axle；2nd part, is revolved with described 2nd axle one
Turn；Pressing component, presses the 1st part and the 2nd part；Guiding mechanism, adjusts the pressing force of this pressing component.
6. a kind of wind power plant, it possesses：Pillar；Nacelle, with respect to the revolution of this pillar；Swiveling gear, is arranged at described
Pillar；1st brake unit, not via this swiveling gear, the revolution to described nacelle is braked；N platform the 2nd brake unit, its
Have the revolution little gear engaging with described swiveling gear and by the rotation of this revolution little gear is braked thus via
Described swiveling gear is braked to the revolution of described nacelle, and wherein, n is more than 2 integer, the spy of described wind power plant
Levy and be,
Described n platform the 2nd brake unit has the torque limiter starting to skid in the torque being applied with more than setting,
The supposition maximum of the external force being intended to make described nacelle revolution be set to A,
By the brake force of described 1st brake unit be set to B,
Will be equivalent to each torque limiter of described setting work start torque be set to X1, X2 ..., Xn,
Will each torque limiter work after transmission work after torque be set to Y1, Y2 ..., Yn,
By each work start torque X1, X2 ..., minimum work in Xn start torque be set to Xmin,
By torque Y1 after each work, Y2 ..., torque is set to Ymax after maximum work in Yn when,
Meet following relation：
(A-B)-[(Y1+Y2+ ...+Yn)-Ymax] ＜ Xmin.
7. a kind of the 2nd brake unit for wind power plant, described wind power plant possesses：Pillar；Nacelle, with respect to
This pillar turns round；Swiveling gear, is arranged at described pillar；1st brake unit, not via this swiveling gear to described nacelle
Revolution is braked, and described 2nd brake unit is characterised by,
Described 2nd brake unit has the revolution little gear engaging with described swiveling gear, and by this revolution little gear
Rotation be braked thus being braked to the revolution of described nacelle via described swiveling gear,
Described 2nd brake unit has the torque limiter starting to skid in the torque being applied with more than setting,
In the case that n platform the 2nd brake unit is equipped on described wind power plant,
The supposition maximum of the external force being intended to make described nacelle revolution be set to A,
By the brake force of described 1st brake unit be set to B,
Will be equivalent to the torque limiter of described setting work start torque be set to X,
When after the work of transmission after this torque limiter is worked, torque is set to Y,
Meet following relation：
(A-B)-(n-1) Y ＜ X,
Wherein, n is more than 2 integer.
8. a kind of the 2nd brake unit for wind power plant, described wind power plant possesses：Pillar；Nacelle, with respect to
This pillar turns round；Swiveling gear, is arranged at described pillar；1st brake unit, not via this swiveling gear to described nacelle
Revolution is braked, and described 2nd brake unit is characterised by,
Described 2nd brake unit has the revolution little gear engaging with described swiveling gear, and by this revolution little gear
Rotation be braked thus being braked to the revolution of described nacelle via described swiveling gear,
Described 2nd brake unit has the torque limiter starting to skid in the torque being applied with more than setting,
In the case that n platform the 2nd brake unit is equipped on described wind power plant,
The supposition maximum of the external force being intended to make described nacelle revolution be set to A,
By the brake force of described 1st brake unit be set to B,
Will be equivalent to each torque limiter of described setting work start torque be set to X1, X2 ..., Xn,
Will each torque limiter work after transmission work after torque be set to Y1, Y2 ..., Yn,
By each work start torque X1, X2 ..., minimum work in Xn start torque be set to Xmin,
By torque Y1 after each work, Y2 ..., torque is set to Ymax after maximum work in Yn when,
Meet following relation：
(A-B)-[(Y1+Y2+ ...+Yn)-Ymax] ＜ Xmin,
Wherein, n is more than 2 integer.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2015167285A JP6486245B2 (en) | 2015-08-26 | 2015-08-26 | Wind power generation equipment and second braking device |
| JP2015-167285 | 2015-08-26 |
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| CN113027682A (en) * | 2019-12-25 | 2021-06-25 | 纳博特斯克有限公司 | Drive control device, power supply device, wind power generation device, and control method |
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| JP7455034B2 (en) | 2020-09-25 | 2024-03-25 | Ntn株式会社 | wind power generator |
| CN114810483B (en) * | 2022-05-05 | 2023-10-20 | 苏州新三力风电科技有限公司 | Yaw method of multi-blade wind power system and multi-blade wind power system |
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| CN113027682B (en) * | 2019-12-25 | 2024-04-26 | 纳博特斯克有限公司 | Drive control device, power supply device, wind power generation device, and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017044150A (en) | 2017-03-02 |
| JP6486245B2 (en) | 2019-03-20 |
| CN106481508B (en) | 2019-04-23 |
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